PT - JOURNAL ARTICLE AU - Peter Uhlmann TI - Parallax DP - 2000 Oct 03 TA - Canadian Medical Association Journal PG - 865--865 VI - 163 IP - 7 4099 - http://www.cmaj.ca/content/163/7/865.short 4100 - http://www.cmaj.ca/content/163/7/865.full SO - CMAJ2000 Oct 03; 163